Inductance control



Jan. 1, 1929.

1,697,377 L. J. WERNER I NDUCTANCE CONTROL Filed Sept. 8, 1923 2 Sheets-Sheet l Jan. 1, 1929.

2 Sheets-Sheet 2 Patented Jan. 1, 1929.,

UNITED STATES PATENT OFFICE.

LEO J. WERNER, OF ARLINGTON, NEW JERSEY, ASSIGNOR T0 DUBILIEB CONDENSER CORPORATION, 01 NEW YORK, N. Y., A CORPORATION OF DELAWARE.

INDUCTANCE CONTROL.

Application filed September 8, 1923. Serial No. 661,706.

This invention relates to new and useful improvements in coupling coils for radlant energy receiving stations, and more particularly to mounting structures for vario couplers. 7

It is the object of the present invention to provide a vario-coupler of simple and efficient construction and one that may be readily mounted on a panel.

With this object in view, I mount the vario-coupler in such a manner that the number of primary turns to be connected into a circuit may be readil determined by the simple turning of a switch lever and without the necessity of the user mounting the switching contacts and soldering a large number of connections.

The invention will be more clearly understood from the following detailed description of an exemplification thereof and t e appended claims.

In the drawings, Figs. 1-4 represent one, and Figs. 5 and 6 a second embodiment of the invention. Fig. 1 is a side elevation partly in section; Fig. 2 is a schematic illustration of the circuit connections together with the arrangement of the wipers; Fig. 3 a top plan view of the dial; Fig. 4 is a detail view of the rotor mounting; Fig. 5 a side elevation partly in section; and Fig. 6 is a sectional view of the device illustrated in Fi 5 along lines 5-5 thereof.

Re erring now to Figs. 1-4, 1 is a panel on which is mounted by means of screws 2 engaging bushings 3, a second panel 4. The stator coil 5 of a vario coupler is carried on the panel 4 by means of brackets 6, 7 fastened to the panel in any suitable manner. The rotor coil 8 is positioned within the stator coil 5 and is mounted by means of a bracket 9 on a disc of insulation 10 riveted thereto, said disc carrying contact segments 11 and 12. The bracket 9 is perforated to admit shaft 13. A pin 14 projecting from the shaft 13 lies in a corrugation 15 provided in the bracket 9 thus locking the rotor 8 firmly in place. The shaft 13 is supported at its end in a bearing provided by a bracket 16 carried by the stator 5, a nut 17 being rovided on the screw threaded end of sha t 13 to limit its longitudinal movement. A finger 18 rojects from the bracket 16 into the path 0 a lug 19 provided on the shaft 13 thus limiting the rotary motion of said shaft.

The shaft extends through perforations provided in the panels 4 and 1 and carries at its other end a knob 20 fastened thereto by means ofa screw 21 engaging a locking plate 22 which encircles the shaft 13. The shaft 13 is surrounded b a sleeve 23 one end of which projects to t e right hand side of the panel 1 and carries a switching lever 24 mounted thereon by means of a set screw 25. The other end of the sleeve 23 is provided with a rim 26. The rim 26 is engaged by a flat spring 27 which lies a ainst the panel 1. A wiper 28 composed o a plurality of flat springs is riveted to the rim 26 and is provided with a perforation through which the shaft 13 projects. The wiper has an upper and a lower bent down wi ing contact arm 29 and 30, respectively. Ihe contact arm 29 cooperates with terminals 31 in which connecting wires 32 terminate, the connecting wires 32 being connected with the primary coil 5 at different points thereof. The coil 5 is connected at one side to binding post or terminal 34 by a conductor 33, through the contact arms 29 and 30, while the opposite terminal of the coil 5 can be connected to the other side of the circuit by means of a conductor wire 33 leading to a terminal or binding post 37; the diagram of connections being indicated in Figure 2. The segment 35 is mounted on a panel 4 b screws 36. The wiping contact 30 of the wiper 28 cooperates with this segment 35.

The circuit connections with the rotary coil are established through binding posts 40 mounted on the panel 4 by means of bolts and nuts 41 and clamping into position sets of contact springs 42 and 43 cooperating as wipers with the contact segments 11 and 12 respectively. The secondary coil 8 is connected with segments 11 and 12 at terminals 44 and 45. Y

The contact arm The ation of the device will obviously appear mm the above. By means of the knob and through the agencv of the shaft 13 the secondary coil 8 may e rotated-at 180, lug 19 serving as a stop. During the rotation of the coil 8 the wipers 42 and 43 maintain good contact with the conducting segments 11 and 12 to which the terminals of this coil are connected. If it is desired to vary the number of turns included in the primary coil 5, a knob 46 mounted near the end of switching lever 24 is seized to move the lever to the right or to the left, the movement being limited within a cut-away portion of a disc 47 mounted on the panel 1 between said panel and the dial 20. The movement of the lever is transmitted to the wiper 28,- thecontactarm 29 of which w1ll move from one terminal 31 to the other varymg thus the number of turns connected into the circuit. The various positions of the wiper are determined by numerals displayed on the panel 1 in juxtaposition with the switching lever Wh le in the embod ment herein disclosed only five different positions are shown, obviously this number may be varied without departing from the present invention.

Referring now to Figs. 5 and 6 in which the same reference numerals are used as in Figs. 1-4, we have a structure in which the panel 4 is mounted flush against the panel 1. The sleeve 23 is somewhat longer and projects through both panels 1 and 4, the wiper 28 being bent double as compared with Fig. 1, both contact arms 29 and 30 extending downward but to difi'erent depths.

30 cooperates with the segment mounted on the panel and the contact arm 29 cooperates with the terminals 31 also mounted on the panel 4 just below the segment 35. Otherwise the structure is in all respects identical with the one hereinbefore described except that the wipers 42 and 43 (Fig. 6) which cooperate with segments 11 and -12 are mounted on the shell of stator coil 5 by means of screws and 51.

What I claim is:

1. In a vario-coupler a rotor coil and a stator coil, one within the other and encompassed thereby, a plurality of connections with the stator coil, terminals for said connections, a shaft for operating the rotor coil,

contact mechanism associated with the rotor coil and the shaft for enabling electrical connection to be made with the rotor coil in all relative positions. thereof, and additional contact mechanism concentric with said shaft to enable the stator coil to be selectively connected into'circuit through any one of said terminals, said additional contact mechanism comprising movable contacts for both ends of the stator coil.

2. In a vario-coupler a rotor coil and stator coi1,one within the other and encompassed thereby, a lurality of connections with the stator coi terminals to said connections, a shaft for operating said rotor coil, contact mechanism associated with the shaft for enabling electrical connection to be made with the rotor coil in all relative positions thereof, additional contact mecha nism concentric with the shaft to enable the stator coil to be selectively connected into circuit through any one of said terminals, said additional contact mechanism comprising movable contacts for both ends of the stator coil, a lever for operating the said additional contact mechanism, and a knob on said shaft overlying the lever.

3. In a vario-coupler a rotor ,coil and a stator coil, one within the other and encompassed thereby, a panel supporting the stator coil, a pluralityof connections with the stator coil, terminals on said panel for said connections, ashaft for operating said rotor coil, contact mechanism associated with the rotor coil and carried b said shaft and anel for enabling electrical connection to e made with the rotor coil in all relative positions thereof, and additional contact mechanism concentric with said shaft to enable the stator coil to be selectively connected into circuit through any one of said terminals, said additional contact mechanism comprising movable contacts for both ends of the stator coil.

4. In a vario-coupler a rotor coil and stator coil, one within the other and encompassed thereby, a plurality of connections with the stator coil, a panel on which the stator coil is mounted, terminals for said connections carried by the panel, a shaft for operating the rotor coil, contact mechanism associated with the rotor coil,-the shaft and the panel tion to be made with the rotor coil in all positions thereof, additional contact mechanism concentric with said shaft to enable the stator coil to be selectively connected into circuit through any one of said terminals, said additional contact mechanism comprising movable contacts for both ends of the stator coil, a lever to operate the additional contact mechanism, and a knob on the shaft overlying said lever.

5. In a vario-coupler, a coil, connections with said coil at a plurality of points thereof, a panel, a contact segment thereon in which connection with one end of the coil terminates, terminals on said panel for the other connections, two wipers, one cooperating with said segment and the other with said terminals, a second panel on one side of which said panel is mounted, and a lever on the other side of said second panel for moving said wipers.

6. In a varlo-coupler, a stator and a rotor coil, connections Wlth Sflld stator at a plurality of points, a first panel, a second panel to permit electrical connecon the rear side of which said first panel is ment, a knob on the other side of said secmounted, terminals on said first panel for 0nd panel for actuating said rotor, and a said connections, a conducting segment on lever at the other side of said second panel 10 said first panel in which one end of the stafor operating said wiper.

5 tor coil terminates, a wiper having two con- In testimony whereof I aflix my signatacts, one cooperati g with said terminals ture. and the other with said conducting seg- LEO J. WERNER. 

